65020998 has 64 divisors (see below), whose sum is σ = 154990080. Its totient is φ = 17798400.

The previous prime is 65020993. The next prime is 65020999. The reversal of 65020998 is 89902056.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65020993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104733 + ... + 105351.

It is an arithmetic number, because the mean of its divisors is an integer number (2421720).

Almost surely, 2^65020998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65020998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77495040).

65020998 is an abundant number, since it is smaller than the sum of its proper divisors (89969082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65020998 is a wasteful number, since it uses less digits than its factorization.

65020998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 65020998 is about 8063.5598838230. The cubic root of 65020998 is about 402.1158671973.

The spelling of 65020998 in words is "sixty-five million, twenty thousand, nine hundred ninety-eight".